Safety carriage



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V. H. HAYSLIP SAFETY CARRIAGE Nov. 10, 931.

Filed April 3, 1928 Lid Patented Nov. 10,, 1931 VICTOR I-I. HAYSLIP, F HOUSTON,

SAFETY CARRIAGE,

Application filed April 3, 1928; Serial No. 267,119.

This invention relates to new and useful improvements in a safety carriage.

One object ofthe invention is to provide a device of thecharacter described whereby a workman may quickly and safely .descend from a derrick or other high structure.

Another object of the invention is to provide a carriage of the character described, in combination with a cable forming a track on which the carriage may run, and a brake whereby the speed of descent may be controlled.

In the drilling and operating of oil wells atall derrick is erected over the well and it often becomes necessary for a workman to perform certain duties, incident to the operations, up in the derrick and in the case of a strong gas blow out or in case of fire it sometimes becomes impossible for the workman to descend by means of the usual ladder, provided for the purpose, and the device, herein described, has been provided for the easy and safe descent of the workman in case he cannot descend in the usual way.

A further feature of the invention is to provide a safety carriage of the character described, which is of very simple construction, may be cheaply and easily produced and which is very efficient for the purpose intended.

With the above and other objects in View this invention has particular relation to certain novel features of construction, operation and arrangement of parts an example of which is given in this specification and illustrated in the accompanying drawings, where1n:

Figure 1 shows a side elevation of the de vice.

Figure 2 shows a longitudinal sectionalp At each end the section 3 has the spaced lugs'e, -i and the end of the section 2 have the reduced tenons 5, 5 which fit between the corresponding lugs .and are secured therein by'ineans ofthe cross pins 6, 6. The section 3; has a lengthwise groove 7 extending from end to end thereof adjacent the joint between the sections provided to receive a supporting cable 8 on which the carriage runs, as on a track. Y

Housed within the section 2 are the peripherally grooved carrier wheels 9, 9 which run on the said cable and support the carriage thereon.

Seated in a cavity 10, of the section 2, there is a brake 11 having the outwardly ex-' tending arm 12 which works through the bearing 13 and extends beyond the carriage.

There is a brake lever 14 pivoted, at one end, to the carriage and whose other end is formed into a grip 15. This lever operates against the outer end of the arm 12.

Depending from the section 3 of the carriage, there in a leg loop 16 and said carriage is also provided with a hand grip 17.

The cable 8 has its upper end fastened to the upper part of the derrick and the cable extends out diagonally from the derrick and is anchored to the ground, or to some suitable anchor out a distance from the foundation of the derrick. V

' The carriage may be held in readiness for use by tying the same to the derrick, or the cable 8, at the upper end of said cable, by a suitable tie 18. lVhen the workman desires to descend, in case of emergency, he mayinsert one leg through the loop 16 and hold on to the carriage by the grip 17.

The weight of the workman will causethe tie 18 to break, and the carriage will then descend along the cable 8 and carry the workman down and out from the derrick to a place of safety. a

The workman, by gripping the grip 15, may pull the brake lever 14 against the arm 12 and. thereby set the brake 11 against the cable 8 and control the speed of the descent' lVhile I have shown what I now consider the preferred form of the invention it is obvious that mechanical changes .may be made therein and equivalents substituted for the parts shown and I reserve the right to make such mechanical changes and substitutions as may be found desirable and such as may be comprehended Within the scope of the appended claim.

Whatv I claim v is 2-- A safety carriage: including a body co1nposed of longitudinal sections detachably secured together, one of said sections having a longitudinal groove provided to receive a supporting cable, carrier wheels, one arranged adjacent each end of the body and housed within the body and formed with peripheral grooves to receive said cable, one of said, sectionshaving a cavity, a brake in said cavity adjacent said cable, said brake having an outwardly extending arm, a brake lever pivoted at one end of the carriage body and whose other end is formed into a grip, said lever working against the outer end of said arm, a leg loop depending from the carriage and hand grip on said carriage.

In testimony whereof I have signed my name to this specification.

VICTOR H. HAYSLIP. 

